just confirmed....the 2014 antenna will obviously physically fit....but the 14' has a new electrical architecture....so the wiring etc. is different and WILL NOT WORK on 11-13' Jeep Grand Cherokees!

This is a bit strange as it should only be 2 conductors for the aerial. Center core and the coax shield. Hopefully someone comes up with a mod so this OEM sharkfin aerial can be fitted. For example Modified plug or possibly solder the connection. If i could get my hands on oneof the 2014 OEM Shark Fins I would attempt it myself.

its the powernet architecture my friend...completely different electrical system. Probably will wire up or something...but the powernet and previous gen electrical systems use different frequencys or some electrical term like that. Im no electrician...so i dont know the terms. I doubt anyhting on the 11-13 to 14's will be compatible